Barbara Mauritzen, daughter of Karl Mauritzen, a Danish

Denmark

Denmark is a Scandinavian country in Northern Europe. The countries of Denmark and Greenland, as well as the Faroe Islands, constitute the Kingdom of Denmark . It is the southernmost of the Nordic countries, southwest of Sweden and south of Norway, and bordered to the south by Germany. Denmark...

 immigrant, was a member of the WRNS

Women's Royal Naval Service

The Women's Royal Naval Service was the women's branch of the Royal Navy.Members included cooks, clerks, wireless telegraphists, radar plotters, weapons analysts, range assessors, electricians and air mechanics...

 during World War II

World War II

World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

 and was posted to HMS Pembroke 5 (billeted at Woburn Abbey

Woburn Abbey

Woburn Abbey , near Woburn, Bedfordshire, England, is a country house, the seat of the Duke of Bedford and the location of the Woburn Safari Park.- Pre-20th century :...

).

She was one of the female operators first of the Robinson

Heath Robinson (codebreaking machine)

Heath Robinson was a machine used by British codebreakers at Bletchley Park during World War II to solve messages in the German teleprinter cipher used by the Lorenz SZ40/42 cipher machine; the cipher and machine were called "Tunny" by the codebreakers, who named different German teleprinter...

 and then Colossus

Colossus computer

Not to be confused with the fictional computer of the same name in the movie Colossus: The Forbin Project.Colossus was the world's first electronic, digital, programmable computer. Colossus and its successors were used by British codebreakers to help read encrypted German messages during World War II...

 decoding computers under Max Newman

Max Newman

Maxwell Herman Alexander "Max" Newman, FRS was a British mathematician and codebreaker.-Pre–World War II:Max Newman was born Maxwell Neumann in Chelsea, London, England, on 7 February 1897...

 (in the Newmanry

Newmanry

The Newmanry was a section at Bletchley Park, the British codebreaking station during World War II. Its job was to develop and employ machine methods in Cryptanalysis of the Lorenz cipher. The Newmanry was named after its founder and head, Max Newman...

) at Bletchley Park

Bletchley Park

Bletchley Park is an estate located in the town of Bletchley, in Buckinghamshire, England, which currently houses the National Museum of Computing...

. Following VE day her retraining in Japanese was cut short by the Japanese capitulation.

After demobilisation she returned to Edinburgh to work in her family's shipping business.